CVE-2026-3454 Information disclosure in GenerateBlocks
Authenticated contributors can expose sensitive post data and author emails via insecure direct object reference in the GenerateBlocks WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3454?
CVE-2026-3454 is a medium-severity vulnerability in edge22 GenerateBlocks, published on 5 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:<target>|key:<meta_key>}} and {{post_title id:<target>|link:author_email}}.
Weakness: CWE-639
Which versions are affected by CVE-2026-3454?
How do I fix CVE-2026-3454?
No fix has been published for CVE-2026-3454 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3454 being exploited?
There is no known exploitation of CVE-2026-3454 in the wild and no public exploit code.
Sources
Also known as GHSA-6288-wf2g-3fwm.